Hydraulic press.



PATENTED AUG. 21, 1906.

H. ROMNDER.

HYDRAULIC PRESS.

APPLICATION FILED APR.16, 1904. RENEWED JAN. 31. 1906.

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H. ROMNDBR.

HYDRAULIC PRESS.

AYPLICATION FILED APR.16,1904. Rfmnwnn JAN.31.1906.

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No. 829,125. PATENTBD AUG. 21. 190e. H. ROMNDBR..

HYDRAULIC PRESS.

APPLICATION FILED APR. 16, 1904. RBNBWED JAN. 31. 1906.

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` or press embodying my invention.

HERMANN ROMNDER, OF MILWAUKEE, WISCONSIN.

HYDRAULIC PRESS.

Specification of Letters Patent.

Patented Aug. 21 1906.

Application led April 16, 1904. Renewed January 3l, 1906. Serial No. 298.826.

To all La7/2,0m, t mfc/y concern.'

Be it known that I, HERMANN ROMNDER, a citizen of the United States, and a resident of Milwaukee, county of Milwaukee, State of Wisconsin, have invented certain new and useful Improvements in Hydraulic Presses, of which the following is a specification.

My invention relates to machines in which under the simultaneous influence of heat and pressure a number of straight or ilat sheets of wood, generally in the form of veneers, of any desired thickness may be forced into intimate union with each other to form bent or curved wood-veneer plates and similar articles which may be used for a great variety of purposes.

The objects of my invention are to provide an efficient, economical, and rapid machine or press of simple construction and comparatively small cost, by the use of which in one operation a number of straight sheets or layers of wood or wood veneer maybe cut each into a number of pieces of desired size and brought under the simultaneous influence of heat and pressure into this homogeneous union, resulting in the formation of curved or bent plates which are practically impervious to moisture and atmospheric iniiuences and which when thus constructed may be used for various purposes.

To the above ends my invention consists of the devices hereinafter described, and defined in the claims.

One form of my invention is shown in the accompanying drawings, wherein like characters of reference indicate like parts throughout the several views.

Figure 1 is a side elevation of the machine Fig. 2 is a side view of part of two of the press-plates of the machine when open. Fig. 3 is a side view of part of two of the press-plates of the machine when closed. Fig. 4 is atop view,

on a larger scale, of a part of a press-plate. Fig. 5 is an end view of same. Fig. 6 is a vertical section on the line 1 1 of Fig. 4, showing part of two adjoining press-plates and V closed.

. :A A are'vertical parallel columns, of metal i ior `o ther suitable material, suitably set and anchored with their lower ends in a usual foundation or base of suitable material and sufficient size and strength to support the press, (not shown,) and the press-plates are mounted on and connected with the said columns in suitable manner, as hereinafter 'shown and described. j

B is a vertical cylinder, also set in said foundation or base, and in said cylinder B a piston C is arranged, movable vertically, being actuated by hydraulic pressure, the presswater being supplied and discharged through a pipe a, suitably connected to said cylinder B. At its upper end the piston C assumes the form of or is provided with a bed or bottom press-plate D of suitable dimensions, through which the upright columns A A eX- tend in such a way that the said plate D while being raised and lowered slides on said columns A A and is guided thereby in its movements.

A number of horizontal press-plates, each consisting of a number of sections F F and end or guide blocks G G, are provided, movable vertically between the vertically-movable bottom plate D and the stationary crown or top plate E, which latter is suitably secured to the upright columns A A at their upper ends and held in position by means of suitable nuts or caps b bor other means screwed or otherwise fastened to the upper ends of the said columns. Each of these plate-'sections F F, consisting of metal or other suitable material, has one concave and one convex surface so arranged that the conveX surface of one section will correspond' with the concave surface of another section, and when the press-plates, formed of a number of. said sections, are pressed and held together they will produce bent Wood-veneer plates or other material with a curvature corresponding to the conveXo-concave meeting acles or surfaces of each set of said sections The guide-blocks G G, of suitable material and shape and form, have substantially U- shaped ends of sufficient size to accommodate between them and the outer sections of the press-plates the upright columns A A and a hollow metal tube or sleeve H, surrounding each of said columns, and by means of slots J J of suitable lengths provided in 'said sleeves H H at suitable distances from each other and by means of pins d d extending IOO ,employed in one press.

through said guide-blocks G G into the slots J J of the sleeves H H each horizontal pressplate may be raised or lowered a suitable predetermined distance between the upright columns A A.

Any number ofsections F F may be connected laterally at their ends by means of couplings or bolts e e or otherwise to form a practically continuous horizontal press-plate, and any number of such press-plates may be Each one of these press-plates'is suitably placed in position between the upright columns AA, and the metal end or guide blocks G G are secured to the outer sections of each plate by means of screws ff or otherwise. Each of the said sections F F is provided with suitable steam chambers or flues c c, adapted to have steam or other means circulate through them, whereby the curved pressing-surfaces of the sections F F may be heated to the desired degree to act upon the material m to be pressed between them andthe (waterproof) cementing medium with which the several layers of the said material m are coated. This material m, as stated before, consists of a number of straight sheets of wood, generally in the form of veneers of any desired thickness, or other suitable material which is designed to be glued and pressed together between the press-plates under suilicient heat and pressure, the cementing medium with which the several layers or sheets have been coated binding them together to one practically homogeneous material of bent or curved form. The cementing medium employed may be any suitable waterproof composition-such, for example, as a compound of glue and potash.

The steam chambers or lues c c of adjoining sections F F of each press-plate are connected by means of suitable packing, as is more clearly shown at o in Figs. 4, 6, and 7. .The end or guide blocks G G are also provided with steam chambers or flues i i, and these steam-chambers i i of adjoining guide-blocks are connected by means of telescoping steam connections K K, consisting of a number of pipes g g, set in suitable packings provided in said guide-blocks, one of said pipes g g of each of said telescoping steam connections being of a diameter of suilicient size to allow it to slide a greater or less portion of its 'length into the other pipe g of each of said telescoping steam connection, the latter pipe being of su'llicient diameter to overlap the smaller one, and by means of suitable packing provided between these pipes they form a steam-tight joint, oneof said pipes g beingalso arranged stationary in the guide-block to which it is connected, while the other pipe Vis arranged movable in the packing of the guide-block to which it is connected and extending a correspondingly greater or less portion of its length into the steam-chamber i ofl its guide-block as the press is being opened or closed, a number of lugs h' 7i, provided at economical, el'licient, and inexpensive and obviates the many cumbersome and complicated steam connections`between movable press-plates now generally used, all of which latter require space on the outside of said press-plates and press, while my improved steam connection shown herewith occupies a very small place and is arranged most conveniently and entirely out of the way.

Between the separate sections FF of each press-plate I also provide a knife or number or knives L L of suitable size and shape, which when the press is being closed cut the sheets of material m placed between the several press-plates into suitable pieces and while the press remains closed extend into the space left open between the sections of the next adjoining press-plate, as will readily be seen on reference to Figs. 2 and 3. The sections F F of the press-plates next vto the crown and the bed plate have preferably'one flat and one curved surface each, the flat surface of each of said sections facing the crown and the bed plate, respectively, while the curved surface corresponds with the curved surface of the next adjoining press-plate, as shown on Fig. 1.

In practice l find it most advantageous to have the press-plates separately and independently detachable from the apparatus, so that it is not necessary to dismount or disassemble other parts of the press when it is desired to take out any of these parts.

The operation of my improved machine, described in connection with the drawings, is as follows: The press standing in its normal open position, with the bed-plate D and the piston C in their extremely lowest position and the several horizontal press-plates also in their respective lowest positions, the material m is placed in position between the several press-plates, the surfaces of the inner layers of the said material having previously been covered with a suitable waterproof gluing TIO IIC

by means of the guide-blocks G G when the materialym between the convex and concave surfaces of the sections vvof the several pressplates is being thoroughly compressed and given the desired bent or curved shape, the knives L L having mechanically cut the several layers of material as soon as the material has been pressed against the knives. The machine then stops and is allowed to stand, exerting this fixed pressure until the layers of the material m have assumed permanent union and practically become homogeneous pieces or plates impervious to moisture and atmospheric influences and of the required bent or curved shape corresponding to the conveXo-concave meeting surfaces of the said press-plates and the sections F F thereof, be-

tween which in one operation the said material fm is cut, compressed, and bent, it being understood -that the press-plates are sufficiently heated during the'operation of the press by any suitable means, as steam entering through the inlet 7c, circulating through the ilues or chambers c c of the sections F F, and passing from one press-plate to the other through the steam-chambers it of the guideblocks G G and the telescoping steam connections K K, provided between the several adjoining guide-blocks, and discharging through the outlet-pipe Z, provided in one of the guideblocks of the lowest press-plate, whereby the desired result is brought about under simultaneous, heat and pressure. The press is then opened, the press-water supply through pipe a being shut off, the piston C .moving downward of its own weight as soon as the hydraulic pressure is released, and the several horizontal press-plates slide back to their previous lowered positions, being held in the slots J J of the sleeves or tubes H H by means of the pins d d extending through the guideblocks G G into said slots J J. The distance between the several press-plates is optional to meet requirements, according to the thickness of the material.

By means of this improved machine l am able to produce a large variety of structures in which plates or veneers of wood or other suitable material may be joined so as to present a continuous homogeneous body dr a simple or a compound open curve and suitable for arches lor other structures in which curvature of greater or less pitch is desired; but as the principle of construction and operation remains the same throughout l do not deem it necessary for the purposes of this case to carry out specific illustrations further than as above given` The details of operation and construction of this machine or press may be varied from the above description without changing the nature of my invention so long as substantially straight or flat sheets of material are cut into a number of pieces of desired size, pressed, and joined together into practically continuous homogeneous pieces to form bent or curved plates.

I claiml. rlhe above-described press, composed of a number of parallel columns, a stationary crown-plate, suitably connected with said columns and held in position by means of caps or nuts fastened to the ends of said columns, a bed-plate arranged movable between said columns, a'nd a number of pressplates arranged movable between said crown and said bed plate; each of said press-plates being formed of a number of separate sections and guide-blocks the said sections having convexe-concave meeting surfaces a number of knives, suitably arranged and held in position between the sections of the said press-plates; means whereby said bed-plate may be moved successively in one direction and the said press-plates forced and held together and the material between said pressplates compressed, and in the opposite direction and the press-plates separated, and means whereby the said press-plates may be heated.

2. A hydraulic press, composed of a number of vertical parallel columns, suitably set 'and anchored with their lower ends in a suitable foundation, a stationary crown or top plate, connecting said columns at their upper ends and being suitably held in position, a bed or bottom plate, arranged movable vertically between said columns, and a number of press-plates, arranged movable vertically between said .crown and said bed plate, each of said press-plates being formed by a number of sections and guide-blocks, of suitable material and form, securely connected by means of couplings or otherwise, said sections and guide-blocks being provided with intercommunicating chambers or iues 5 a number of knives, suitably arranged and held in position between the sections of the said pressplates 5 means whereby said bed-plate and said press-plates may be raised and lowered and the material between said press-plates compressed to form bent or curved plates, and means whereby the said press-plates may be heated.

3. A hydraulic press, composed of a number of parallel vertical columns secured with their lower ends in a suitable foundation, a

vstationary crown-plate, suitably secured to securely connected by means of couplings or otherwise, and provided with intercommunieating steam chambers or flues; a number of TOO IIC

knives suitably held in position between the sections of the press-plates; means 'whereby said bed-plate and said press-plates may be raised and lowered and the material between said press-plates compressed to form bent or curved plates, and means whereby the said press-plates may be heated.

4. A hydraulic press, composed of a number of vertical parallel columns, suitably sc- Cured with their lower ends in a suitable foundation, hollow metal tubes or sleeves surrounding said columns, a stationary crownplate suitably secured to and connecting said columns at their upper ends, a verticallymovable bed-plate arranged between said columns, and a number of separate sections forming together with a number of guideblocks a number of vertically-movable pressplates, with intercommunicating steam chambers or flues, the said end or guido blocks holding` the said press-plates movably in position between the said columns by means of pins extending through said guide-blocks into slots of suitable lengths provided at suitable distances from each other in said sleeves or tubes; each of said sections having one concave and one convex surface so arranged that the convex surface of a section of one press-plate will correspond with the concave surface of a section of another `press-plate, means whereby said bed-plate and said pressplates may be raised and lowered successively and the material between said pressplates compressed to form plates with a curvature corresponding to the convexe-concave meeting surfaces of the said sections, and means whereby the said press-plates may be heated.

5. A hydraulic press composed of a number of parallel columns, secured with one end in a suitable foundation and with their other ends in a stationary crown-plate, said crownplate being suitably held in position by nuts or other means fastened to said ends ofsaid columns, tubes or sleeves covering said columns, a bed-plate arranged movable between said columns7 and a number of press-plates arranged movable between said crown and said bed-plate and said columns each of said press-plates consisting of a number of sections and guide-blocks, with intercommunieating steam chambers or lues; cach of said sections having one concave and one convex surface so arranged that the convex surface of a section of one press-plate will correspond with the concave surface of a section of another press-plate; a number of knives of suit-l able material and shape, arranged and held in position between the sections of the pressplates, means whereby said bed-plate and said press-plates may be moved successively in one direction and the material between said press-plates compressed to form bent or vcurved plates, and in the opposite direction and the material removed after compression,

and means whereby the said press-plates may be heated.

6. A hydraulic press composed of a number of columns secured in a suitable foundation, a stationary plate suitably secured to and connecting said columns at one end and a movable plate arranged to slide over said columns substantially near the other end of said columns, and a number -of press-plates being held movably in position between said columns and said stationary and movable plate by means of guide-blocks suitably secured to said press-plates, and pins extending through said guide-blocks into slots of suitable lengths provided at suitable intervals from each other in suitable sleeves or tubes covering a greater portion of said columns; each of said press-plates having steam chambers or flues communicating with steamchambers provided in said guide-blocks; the steam-chambers of adjoining guideblocks being connected by means of telescoping steam connections 5 each of said telescoping steam connections consisting of a number of pipes so secured to each other that one of said pipes arranged stationary in one .guide-block will slide a greater or less portion of its length into another pipe arranged movable in the packing of the guide-block to which it is connected and extending a correspondingly greater or less portion of its length into the steam-chamber of its guide-block as the press is being opened or closed means whereby said movable plate and said pressplates may be moved successively in one direction and the material between said pressplates compressed, and in the opposite direction and the material removed after compression, and means whereby said pressplates may be heated.

7. A hydraulic press composed of a number of parallel vertical columns, suitably secured with their lower ends in a suitable foundation, a stationary crown-plate suitably secured to and connecting said columns at their upper ends, a vertically-movable bedplate arranged between said columns, anda number of press-plates with convexo-con- IOO IIO

cave meeting surfaces, arranged movableV vertically between said crown and said bedplate and said columns, each of said pressplates being formed of a number of sections and end or guide blocks, of suitable material and form, securely connected by means of couplings or otherwise, and provided with intercommunicating steam chambers or flues the said guide-blocks holding the said pressplates movably in position between thesaid columns by means of pins extending through said guide-blocks into slots of suitable lengths provided at suitable distances from each other in sleeves or tubes covering said columns; the steam chambers of adjoining guide-blocks being connected by means of telescoping steam connections; a number of knives of suitable material and shape, arconcave surfaces of the press-plates, and ranged and held in position between the secmeans wherebT the said press-plates may be tions of the pressplates means whereby said y heated.

bed-plate and said press-plates may be raised HERMANN ROMUNDER.

5 and lowered and the material between said Witnesses:

press-plates compressed to form bent plates CARL L. FIEDLER7 of a curvature corresponding to the conveXo- PAULA ROSEMARK. 

